package com.hbut.service;

import com.hbut.service.impl.UserServiceImpl;
import com.hbut.vo.Users;

import java.util.List;

public interface UserService {
     static UserService getInstance() {
         return new UserServiceImpl();
     }
     Users userLogin(Users users);

    List<Users> queryUserList(String username);

    int insertUser(Users users);

    int deleteUser(String id);

    Users queryUserById(String id);
}
